OPIXray [1]} is the most recent baggage X-ray dataset (released publicly for the research community in 2020). It contains 8,885 colored X-ray scans. As per the dataset standard, out of these 8,885 scans, 7,109 are to be utilized for the training purposes, while the remaining 1,776 are to be used for testing purposes, to detect scissor, straight knife, multi-tool knife, folding knife, and utility knife. Moreover, the dataset authors also quantified occlusion within the test scans into three levels, i.e., OP1, OP2, and OP3. OP1 indicates that the contraband items within the candidate scan contain no or slight occlusion, OP2 depicts a partial occlusion, while OP3 represents severe or full occlusion cases.
